Energy & Work Converter
Convert between various energy units. Useful for thermodynamics, nutrition (Calories), and electricity (kWh).
- Free Online Tool
- Instant Results
- Mobile Friendly
- No Installation
- Secure & Private
Understanding This Calculator
Energy Unit Conversions
Energy can be measured in many ways depending on the context: Joules for science, Calories for food, and Kilowatt-hours for electricity.
1. Calories to Joules
1 Calorie (cal) is approximately equal to 4.184 Joules (J). Note: Food labels use 'Calories' which are actually kilocalories (kcal).
Joules = Calories × 4.184
Example 1: Convert 100 cal to Joules
- Formula: 100 × 4.184
- Result: 418.4 Joules
Example 2: Convert 500 cal to Joules
- Formula: 500 × 4.184
- Result: 2092 Joules
2. Kilowatt-hours to Joules
1 Kilowatt-hour (kWh) is equal to 3.6 million Joules.
Joules = kWh × 3,600,000
Example 1: Convert 1 kWh to Joules
- Formula: 1 × 3,600,000
- Result: 3,600,000 Joules
Example 2: Convert 0.5 kWh to Joules
- Formula: 0.5 × 3,600,000
- Result: 1,800,000 Joules
How to Use
How to Use
Enter an energy value and select the desired units.
Frequently Asked Questions
How accurate is the Energy & Work Converter?
We use standard conversion factors to ensure high accuracy for all conversions.
Is this calculator free to use?
Yes, this calculator is 100% free and does not require any registration or subscription.
Is it mobile-friendly?
Absolutely! Our tool is optimized for all devices, including mobile phones, tablets, and desktop computers.